Problema Solution
use the five steps for problem solving to answer
Marissa has a budgeted $65 for her monthly cell expence. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes can she talk on her cell phone in a month and not exceed her budget?
Answer provided by our tutors
Budget=B=$65
Cost/Min=R=$.25/min
Plan Cost= P=$15
Min. Used=X min= Solve for this.
Given equation
B=P+R*X => Check to make sure they all have the same units to see if equation makes sence
$=$+$/min*min=> $=$+$ which means the units work so your equation is good.
Find X:
B=P+R*X
65=15+.25*x => Subtract 15 from both sides.
40=.25*x=>divide by .25
x=160 Min.